Who's That Knocking on My Pipes??

Maybe it’s the cold weather or the fact that sofaulty ballcock by lifting up on the float ball while
many people are out of work and have time on theirsomeone turns on the faucet that is causing the
hands to listen for it but it seems this weeksnoise.
discussion forums are full of questions about plumbing3. Bad faucet washer. If your nosie only happens
noises, most specifically water hammer. Waterwhen using a certain faucet the faucet washer may
hammer is that thunking, clunking, clanging noise yoube loose or damaged. This can cause it to flutter in
get when you turn a faucet off or the washingthe water stream causing various sounds To repair
machine switches cycles. Plumbing can make manythis tighten the screw to the washer in the faucet
weird noises which can have many causes and;stem. If this doesn't work, then it's time for a new
sometimes, they're not easy to isolate and fix. Thestem assembly. If your dishwasher or washing
following are some of the common issues.machine is causing the noise you may have a worn
1. Water hammer. This noise doesn't happen without solenoid fill valve.
flowing water, so if it occurs while your water is4. High water pressure can cause a variety of
running, it isn't water hammer. As I mentioned at theproblems including these noises. It can also damage
beginning of this article water hammer happens whentoilet valves and other devices connected to the
you turn OFF a water suddenly. Shutting off theplumbing. I saw an issue on a forum last week where
water suddenly sends a pressure or shock wavewater pressure was cited as the cause for a hand
down the water line through the water shocking theheld shower hose coming loose. If you're on a water
pipes and creating the hammer noise. These shocksystem, ask your neighbors if they are having similar
waves travel faster than the speed of sound andproblems or simply call your water supplier and ask
can exert very instant pressure. Over an extendedthat they come out and check your pressure
time, water hammer can damage pipes, valves andsettings. If you have a well you should have a water
eventually weaken pipe joints. This may in itselfpressure meter. If the pressure is above 60psi you
cause additional problems as in #6. Most newermay want to adjust your pressure reducer
homes have devices called hammer arresters that5. Pipes rubbing or bumping inside the walls because
are air filled chambers connected to the plumbing thatthey aren't strapped down well or because the stud
let the pressure wave dissipate harmlessly into apass through holes are too small or off center. If this
cushion of air. These arrestors can become filled withis the case they've probably made the sounds since
water and stopworking. If the banging in your homethe house was built.. If this is the problem you will
has been happening forever you may not have one.have to call a plumber to make the repair. This can
To correct this you must drain your house of all thebe far too complicated for the average homeowner
water in the pipes.. Turn off your water to the housedo-it-yourselfer to handle.
at the main shut off valve or at the meter. Find the6. Pressure regulator. If you have a pressure
lowest faucet in your house, often this is an outdoorregulator on your main water line it may be faulty. If
hose faucet, and open it. Then open the faucets thatyour pounding sound happens while the water's
is in the highest place in the house. Let the lowrunning, it happens at more than one faucet, turning
faucet drain for 5 minutes or until it stops dripping,on other faucets changes the cadence, the pressure
whichever takes longer. Close all the faucets and turnchanges with the pounding, While the noise is
the main back on. When you turn the water back onhappening, check to see if it is coming from the
the pipes will have air in them and will sputter untilregulator. If so, the regulator may need to be
this air is dissipated don't panic.replaced.
2. Faulty toilet fill valve (ballcock) will cause resonanceI hope this information has helped you track down
sounds like a fog horn or a moan. It's easy to check.your plumbing noises and given you enough info to
Close the supply valves to all the toilets. If the noiseeffect a repair yourself, or better yet I hope you
disappears, open them one-by-one till the noise startsget a new job which takes your mind off the issue
again. Replace the ballcock in that toilet. If there areand gives you the money to pay someone to come
no shut-offs handy, sometimes you can locate theand fix it.